Construction is officially under way on King County Wastewater Treatment Division’s first green stormwater infrastructure project.
Construction is officially under way on King County Wastewater Treatment Division’s first green stormwater infrastructure project. It is the first time the division has used green stormwater infrastructure techniques instead of traditional "gray" infrastructure on a major pollution control project.
In early November, the County awarded a $5.1 million contract to Maple Valley-based Goodfellow Bros., Inc. to build a series of bioretention swales in the public right-of-way on 15 city blocks in West Seattle’s Sunrise Heights and Westwood neighborhoods. The awarded bid was within 1 percent of the engineer’s estimate of $5.06 million.
Through natural vegetation and engineered drainage systems, the bioswales will control the pollution that enters Puget Sound near King County’s Barton Pump Station and the Fauntleroy Ferry Dock by keeping runoff out of the sewer system and preventing overflows on rainy days.
The project will be funded in part by State Revolving Funds that may contain funds from the EPA. The Fair Share Goal is 10 percent to Minority Business Enterprise and 6 percent to a Women Business Enterprise.